Linux-2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!
diff --git a/drivers/video/bt455.h b/drivers/video/bt455.h
new file mode 100644
index 0000000..b7591fe
--- /dev/null
+++ b/drivers/video/bt455.h
@@ -0,0 +1,95 @@
+/*
+ *	linux/drivers/video/bt455.h
+ *
+ *	Copyright 2003  Thiemo Seufer <seufer@csv.ica.uni-stuttgart.de>
+ *
+ *	This file is subject to the terms and conditions of the GNU General
+ *	Public License. See the file COPYING in the main directory of this
+ *	archive for more details.
+ */
+#include <linux/types.h>
+#include <asm/system.h>
+
+/*
+ * Bt455 byte-wide registers, 32-bit aligned.
+ */
+struct bt455_regs {
+	volatile u8 addr_cmap;
+	u8 pad0[3];
+	volatile u8 addr_cmap_data;
+	u8 pad1[3];
+	volatile u8 addr_clr;
+	u8 pad2[3];
+	volatile u8 addr_ovly;
+	u8 pad3[3];
+};
+
+static inline void bt455_select_reg(struct bt455_regs *regs, int ir)
+{
+	mb();
+	regs->addr_cmap = ir & 0x0f;
+}
+
+/*
+ * Read/write to a Bt455 color map register.
+ */
+static inline void bt455_read_cmap_entry(struct bt455_regs *regs, int cr,
+					 u8* red, u8* green, u8* blue)
+{
+	bt455_select_reg(regs, cr);
+	mb();
+	*red = regs->addr_cmap_data & 0x0f;
+	rmb();
+	*green = regs->addr_cmap_data & 0x0f;
+	rmb();
+	*blue = regs->addr_cmap_data & 0x0f;
+}
+
+static inline void bt455_write_cmap_entry(struct bt455_regs *regs, int cr,
+					  u8 red, u8 green, u8 blue)
+{
+	bt455_select_reg(regs, cr);
+	wmb();
+	regs->addr_cmap_data = red & 0x0f;
+	wmb();
+	regs->addr_cmap_data = green & 0x0f;
+	wmb();
+	regs->addr_cmap_data = blue & 0x0f;
+}
+
+static inline void bt455_write_ovly_entry(struct bt455_regs *regs, int cr,
+					  u8 red, u8 green, u8 blue)
+{
+	bt455_select_reg(regs, cr);
+	wmb();
+	regs->addr_ovly = red & 0x0f;
+	wmb();
+	regs->addr_ovly = green & 0x0f;
+	wmb();
+	regs->addr_ovly = blue & 0x0f;
+}
+
+static inline void bt455_set_cursor(struct bt455_regs *regs)
+{
+	mb();
+	regs->addr_ovly = 0x0f;
+	wmb();
+	regs->addr_ovly = 0x0f;
+	wmb();
+	regs->addr_ovly = 0x0f;
+}
+
+static inline void bt455_erase_cursor(struct bt455_regs *regs)
+{
+	/* bt455_write_cmap_entry(regs, 8, 0x00, 0x00, 0x00); */
+	/* bt455_write_cmap_entry(regs, 9, 0x00, 0x00, 0x00); */
+	bt455_write_ovly_entry(regs, 8, 0x03, 0x03, 0x03);
+	bt455_write_ovly_entry(regs, 9, 0x07, 0x07, 0x07);
+
+	wmb();
+	regs->addr_ovly = 0x09;
+	wmb();
+	regs->addr_ovly = 0x09;
+	wmb();
+	regs->addr_ovly = 0x09;
+}